Account Management

Teams & Rankings


TeamWinsLossesCompetition LevelGender DivisionCityState
(burnside) TIPP CITY 0 0 MastersMenPortlandOR
2017_Volunteers_Masters 0 0 VolunteersNAAuroraCO
512 0 0 MastersMixedAustinTX
6ixers 0 0 ClubWomenTorontoOntario
7 Express 0 0 ClubMixedNew YorkNY
7 Figures 0 0 ClubMixedLos AngelesCA
8 Bit Heroes 0 0 ClubMixedFrederickMD
Abilene Christian University (ACU Ultimate) 0 0 CollegeMenAbileneTX
Absolute Zero 0 0 ClubMixedSanta ClaraCA
AC Bandits 0 0 ClubMixedOaklandCA
Age Against the Machine 0 0 Grand MastersMenCincinnatiOH
AGE Against the Machine GGM 0 0 Great Grand MastersMenCincinantiOH
Al Akhawayn University-Junior (AUI Ultimate Comets) 0 0 CollegeMixedIfraneMeknes,tafilalt
Alabama (Ramma Jamma) 0 0 CollegeWomenTuscaloosaAL
Alabama (Yellow Hammer) 0 0 CollegeMenTuscaloosaAL
Alabama-B (Alabama B ) 0 0 CollegeMenTuscaloosaAL
Albany High School-JV (Albany Ultimate) 0 0 High SchoolBoysAlbanyNY
Alchemy 0 0 Grand MastersMenTriangleNC
Alchemy 0 0 ClubMixedSan FranciscoCA
All Jeeps, All Night 0 0 ClubMixedBoulderCO
Rows: 1 - 20 of 1401

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   Page: 1 of 71
NameStatusRank SetCreate DateLinks
2017 Triple Crown Tour Women's Rankings (End of Year) - October 25 Published Club Women 10/25/2017 12:42:00 PM Team Rankings
2017 Triple Crown Tour Mixed Rankings (End of Year) - October 25 Published Club Mixed 10/25/2017 12:41:52 PM Team Rankings
2017 Triple Crown Tour Men's Rankings (End of Year) - October 25 Published Club Men 10/25/2017 12:41:44 PM Team Rankings
2017 College Women's - Rankings June 14 - Post Nationals Published College Women 6/14/2017 11:07:43 AM Team Rankings
2017 College Men's - Rankings June 14 - Post Nationals Published College Men 6/14/2017 11:07:29 AM Team Rankings
Rows: 1 - 5 of 5   Page: 1 of 1

About the USA Ultimate Rankings Algorithm

The USA Ultimate Rankings (version 2.0) are used in the College and Club regular seasons to help determine strength wildcard bid allocation throughout the series. The algorithm becomes more accurate later in the season as more valid scores are provided by tournament directors and teams.
The most basic explanation of this rating system is this: for each game a team plays, the team gets a game rating. These ratings are then averaged over all games played by a team.
The next level of complexity is how to compute the points for a given game, and how to average them.  The points for a given game is given by the opponent's rating plus or minus (in the case of a win or loss, respectively) some rating differential x.
The number x is a function of the score. Here is the general formula for it:
The function was chosen to have the following properties:
  • each additional goal is worth more when games are close than when they are not;
  • every game decided by one point gets the same differential of 125, no matter the game total;
  • the maximum x can be is 600;
  • a game earns the maximum differential if and only if the winning score is more than twice the losing score.
Here is a partial table of differentials under this formula:
As an example, suppose team A beats team B 15-11. For a 15-11 game, x = 381. Suppose, further, that team B has a rating of 1010. Then the game rating earned by team A is 1010 381, or 1391.
So, suppose team A has played in 4 games, and each individual game rating is 1298, 913, 1410, and 1103. To determine A's overall rating, we take a weighted average of those numbers, where the weight depends upon how recently the game was played. Games in the first week of the regular season will get a weight of 0.5, while games in the last week of the season get a weight of 1.0. Weights of games in intermediate weeks are interpolated exponentially, so that each week's weight is a fixed multiple of the previous week's weight.
This averaging is done in an iterative process. First, we temporarily set every team's rating to 1000, and compute each individual game rating and take averages. This gives each team a new rating. Then, we re-compute the game ratings and averages, using this new set of ratings, to get yet another set of ratings.  We do this thousands of times until the rating for each team has stabilized. If some team does really well, and, after the first iteration their rating goes up 250 points, then, on the second iteration, all teams that have played the first team will go up by a smaller amount, and on the third iteration, all the teams that have played the teams that played the first team will go up by a small amount, and so on.
Finally, if a team is rated more than 600 points higher than its opponent, and wins with a score that is more than twice the losing score plus one, the game is ignored for ratings purposes. However, this is only done if the winning team has at least N other results that are not being ignored, where N=5.*
* This addition to the algorithm was not yet finalized prior to the first event of the 2014 season, however it is currently in place and active for the season.    
USA Ultimate continues to look to improve its rankings algorithm through consultation with volunteers on the Algorithm Taskforce.  The review process is ongoing as we look to enhance the level of competition and goals of USA Ultimate. Any additional changes/alterations to the Algorithm will be communicated as they occur.
Below is a description of a change to the rankings algorithm used in 2013:
The modification to the algorithm removes the possibility that a team rated more than 600 points higher than its opponent will drop in rating when beating that team by a large enough point differential. The game is preserved to serve as a connection between teams but does not impact the actual rating of either of the respective teams involved. USA Ultimate continues to look to improve its rankings algorithm through consultation with Rodney Jacobson, Sholom Simon and other volunteers on the Algorithm Taskforce.

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